Def. pub.
method for the production of aliphatic conjugated diolefines



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice at Apr. 11, 1968, 849 O.G. 1221. Identiflcation is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 30 cents per sheet Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED SEPTEMBER 16, 1969 804,478 METHOD FOR THE PRODUCTION OF ALIPHATIC CONJUGATED DIOLEFINES Charles R. Noddings, 3610 Boston, Midland, Mich. 48640 Filed Mar. 5, 1969. Published Sept. 16, 1969 Int. Cl. C07c 5/18 US. Cl. 260-680 1 Sheet Drawing. 8 Pages Specification CflLC/UM NICKEL PHOSPHATE CHTHLYST COMMERC/HL PERFORMHNCE flssumeamaxr'mum, For ca/cu/a/fan purposes only The relationship between severity and total productivity is shown as constant in the production of a diolefin by passing mixtures of steam and an olefin and steam' and oxygen through a bed of calcium nickel phosphate catalyst in alternate cycles. FIGURE 1 illustrates this relationship with catalyst lots having different total productivities by showing lines of virtually the same slopes. The severity at which the diolefin should be produced to give a desired productivity may bedetermined by using to expiration only one batch of catalyst. The productivity which will result in the lowest cost of diolefin may then be selected.

C ("W T 804,478 p 1969 c. R. NODDINGS DEF. PUB.

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